ENGINE DIVISION SERVICE MANUAL TM 5-4210-230-14&P-1ENGINEFig. 156 Testing Alternator Belts Using SE-2312 GaugeTo establish tension of a loose belt, apply SE-2312gauge to the belt and make the adjustment. Tighten belt untilproper area for the belt is indicated at the index mark on thegauge. Lock the adjustment and recheck belt tension.Readjust as necessary.When using the SE-2312 belt tension guage,remember to set new belts (belt with less than two minutesrunning time) to the NEW area on the gauge face and usedbelts (more than two minutes running time) to the USED areaon the gauge.NOTE: Where the SE-2312 belt tension gauge isnot available or cannot be used because ofinterference with fan shroud, accessories orclose clearances, a deflection check can bemade. Depress the belt at a point midwaybetween the water pump and alternator pulleys.One-half inch (2") deflection is consideredacceptable as a final setting after the belt hasbeen operated for a short period of time.The air or freon compressor and power steering orair pump belts are adjusted in a similar manner.CGES-210 Page 65PRINTED IN UNITED STATES OF AMERICA